.net cors 跨域

1 添加 cors 引用

 2 按以下红字设置

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using WebApi.Authorization;

namespace WebApi
{
    public class Startup
    {
        // add services to the DI container
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors();
            services.AddControllers();
        }

        // configure the HTTP request pipeline
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            app.UseRouting();

            // global cors policy
            app.UseCors(x => x
                .AllowAnyMethod()
                .AllowAnyHeader()
                .SetIsOriginAllowed(origin => true) // allow any origin
                .AllowCredentials()); // allow credentials

            // custom jwt auth middleware
            app.UseMiddleware<JwtMiddleware>();

            app.UseEndpoints(x => x.MapControllers());
        }
    }
}